/*
 * Copyright 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.camera.core.impl;

import androidx.annotation.RequiresApi;
import androidx.camera.core.CameraFilter;

import java.util.Collections;

/**
 * Implementations of different {@link CameraFilter}.
 */
@RequiresApi(21) // TODO(b/200306659): Remove and replace with annotation on package-info.java
public class CameraFilters {
    /**
     * A camera filter which returns all input camera infos.
     */
    public static final CameraFilter ANY = cameraInfos -> cameraInfos;

    /**
     * A camera filter which filters out all camera infos.
     */
    public static final CameraFilter NONE = cameraInfos -> Collections.emptyList();

    private CameraFilters() {
    }
}
